NUNZIUM

In the 1970s, the biologist Rodrigo Moura completed a study on fishing on the continental shelf and wanted to expand his research by locating the reefs where he caught the fish. When Moura found the fish he caught around the Amazon Reef and in the mouth of the Amazon River, he saw this as an indication that there must be biodiversity underneath. A few decades later, a group of students from the University of Georgia noted that Moura's article did not contain GPS coordinates and used Moura's sound waves and seafloor samples to locate the reef. Finding the reef took about three years before an official announcement was made about its discovery. The Amazon River is home to about 20 per cent of the world's freshwater supply, placing the Amazon Reef at the mouth of the largest river in the world, where every day, one-fifth of the world's water flows into the ocean from the Amazon River. Because of this, the Amazon Reef is less biologically diverse compared to other reefs of its kind. It is a unique ecosystem, and researchers say it could contain many unknown species of medicinal or scientific value, some of which are being studied for their anti-cancer properties. The Amazon reef is unusual because it lies in deep water and is sometimes hidden by the muddy waters flowing into the sea from the world's largest river. Some species may appear only in that area and nowhere else in the world. Brazilian scientists say today that this unique reef habitat is threatened by government plans to drill for oil. The scientists worry that the Brazilian oil company Petrobras plans to drill for oil close to the reef could cause an oil leak that would devastate the ecosystem. Petrobras is planning this month to carry out a test to learn more about how oil diffuses in the case of a leak. If that satisfies Brazil's environmental protection agency, Ibama, exploration wells could follow soon afterwards, 160km (100 miles) from the shore, but much closer to the reef. "This area has one of the strongest currents on the planet and a tidal range that can be greater than 10m (33ft). These are environmental conditions that challenge any engineering work, making it very risky," says Rodrigo Leão de Moura, professor at the Institute of Biology at the University of Rio de Janeiro and the leading scientist involved in the reef's discovery. Brazil is also not new to environmental disasters due to oil drilling. An oil spill that hit the coast of northern Brazil in 2019 also casts a long shadow. On that occasion, tons of thick black crude began washing up at a thousand locations, bringing the tourism industry to a halt. Overnight the biggest market for locally caught fish also disappeared since buyers stopped buying for fear of contamination.